Basic Auth Header Generator

How to generate a Basic Auth header

1. Enter the username exactly as the API or server expects it.
2. Enter the password or token. Some APIs use an API key as the password field.
3. Copy the Authorization header and paste it into curl, Postman, an HTTP client or your integration test.

What Basic Auth does

HTTP Basic Authentication joins the username and password with a colon, encodes that string with Base64, and sends it as Authorization: Basic <token>. Base64 is encoding, not encryption, so the header must only be sent over HTTPS.

When to use it

Basic Auth is still common for internal dashboards, old APIs, staging environments and quick webhook integrations. This generator helps you build the exact header while debugging requests.

Security notes

Anyone who sees the header can decode the credentials. Use TLS, avoid logging the header, and prefer scoped API tokens over personal passwords whenever the service supports them.